Building material



Feb@ i2, B929.,

H. L5. PULLAR BUILDING MATERIAL Original Filed Dec. 26, 1925 "Sti Patented F eb. l2, 1929.

UNITED. STATES avare-3o PATENT GFFICE.

HAROLD B. PULLAR, F DETROIT, MICHIGAN.

:BUILDING MATERIAL.

Application led December 26, 1925, Serial No. 77,709. Renewed May 24, 1928.

-This invention relates to improvements in building material, and refers more particularly to lengths of building material which will be adaptable to numerous and varied uses, for instance, as siding for garages, warehouses, floors, freight cars and the like.

t The building material of the present inventlon possesses certain inherent properties and characteristics, for instance flexibility to allow for proper expansion and contraction, rigidity to permit economical stacking, shipping and installation, and insulating properties to a high degree.

Briefly, the building material of the present invention comprises ordinary building board recessed in its body portion on both surfaces, said recesses being filled with a' waterprooiing mastic or compound such as asphalt and a filler. T This building board may be of any length, convenient for installation, and may be of any width from say two inches upto twelve inches more or less, and may have a ton e and groove connection with adjacent building boards. v

In the drawings, Fig. 1 is a face view showing a built-up wall utilizing lengths of building material of the present invention.

Fig. 2 is a cross sectional view taken on line 2-'2 of Fig. 1.

F g. 3 is a perspective view of one length p of building material.,

.Referring more in detail to the drawings,

each unit 1 comprises a central body portion 2 and end sections 3l and tion 2 and end'sections of wood, felt or molded fibre, metal or any other rigid, semi-rigid or iiexible material as 4. The body pordesired. The end sections 3 and 4 are of course, wider than the body portion, which latter is provided on both of its surfaces with a recess relative to the end sections. The thickness of the body portion 2 should preferably not exceed one-half the thickness of the completed building unit, and it is preferable that the integral structure comprising the body portion 2 and end sections 3 and 4 take a substantially I bar construction having the tongue 5 on one end section, and the corresponding groove 6 adapted to re ister therewith on the other end section. The recesses on both surfaces of the body portion may be formed by removing a portion severed along the lines shown in Fig. 2, or the recesses may be formed integral at the time of formation of the body portion, in the'case of felted or 55 molded fibre or metal. After the skeleton construction comprising the body portion 2 and end sections 3 and 4 is formed, there is"- poured or otherwise formed in the recessed areas adjacent the surfaces of the body por- -60 tion 2 a bituminous compound 7 such as pure asphalt or an asphaltic material having a melting point in excess of say 125o F. more or less. Any desirable filler such as sand, saw-y dust, cork or the like, may be mixed with the`i5 bituminous compound 7 if desired. This bituminous compound is preferably poured or formed in said recessed areas while in heated condition, and may have a surfacing 8 irnbedded therein, or applied thereto, which may be for instance, fine sand, slate, stoneor other ranular substances. If the granular sura'cing is not desired', a coating of talc or mica to prevent adhesion may be applied.

The thickness of the building board of the present invention may vary from one-fourth inch to two inches, more or less. s

It will be obvious that the building board of the present invention embodies the aforementioned roperties and characteristics in s acid and alkali proof, and has the advantage of durability and good wearing qualities. As a substitute for wood flooring, it has more resiliency, has insulating qualities, and is sanitary, and will outwear wood many times. Where it is used for iloors, it is preferable to have a minimum of wood visible, and it may be advisable to have a coating ofasphalt l or asphaltic compound applied to the surface of the wood.

The building looard of the' present invenportion and end sections connected tliereto, tion may be used for Jche side Wall on reand having a, filling on a surface of the body frigerator cars, thus utilizing its insulating pOltOIl 0f bitllmIlOllS material, the 6nd SeC- 10 properties. tions being provided with registering means 5 I claim as my invention: by which they are adapted to be connected Building material including in combina-` adjacent each other.

tion, a supporting base comprising a body HAROLD B. PULLAR. 

